The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 2017
Filed:
Apr. 14, 2016
Applicant:
Google Inc., Mountain View, CA (US);
Inventor:
Gary Jay Morris, Morgantown, WV (US);
Assignee:
Google Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 25/08 (2006.01); G08B 3/10 (2006.01); G08B 17/00 (2006.01); G10K 11/04 (2006.01); H04R 1/28 (2006.01); H04R 1/34 (2006.01); G08B 17/10 (2006.01); G08B 21/14 (2006.01); G08B 17/113 (2006.01);
U.S. Cl.
CPC ...
G08B 3/10 (2013.01); G08B 17/00 (2013.01); G08B 17/10 (2013.01); G08B 21/14 (2013.01); G10K 11/04 (2013.01); H04R 1/2807 (2013.01); H04R 1/34 (2013.01); G08B 17/113 (2013.01);
Abstract
Low frequency alarm tones emitted by life safety devices are more likely to notify sleeping children and the elderly. Disclosed herein is a life safety device equipped with a novel, compact, circumferential resonant cavity which increases the low frequency (400-600 Hz square wave) acoustic efficiency of an audio output apparatus formed by acoustically coupling an audio output transducer to the resonant cavity.